Russian Academy of Sciences

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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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Showing 2003Show all

279 papers · 1 filter

cond-mat.supr-con2003

London's limit for the lattice superconductor

S. A. Ktitorov

A stability problem for the current state of the strong coupling superconductor has been considered within the lattice Ginzburg-Landau model. The critical current problem for a thi…

cond-mat.mtrl-sci2003

XANES spectroscopy study of Pb(Ti, Zr)O3 ferroelectric thin films

Mira Mandeljc, Marija Kosec, S. P. Gabuda +3

Thin films of zirconium-rich perovskites Pb1-3x/2 Lax Zr0.65 Ti0.35O3 (PLZT; x=0.095) were studied using X-ray absorption near-edge structure (XANES) spectroscopy. Is shown, that s…

astro-ph2003★ 10 cited

The phenomenon of the galaxy NGC 6286: a forming polar ring or a superwind?

L. V. Shalyapina, A. V. Moiseev, V. A. Yakovleva +2

(abridged)We present the observations of the pair of interacting galaxies NGC6285/86 carried out with the 6m SAO RAS telescope by using 1D and 2D spectroscopy. The observations of…

cond-mat2003★ 245 cited

Dephasing in Quantum Dots: Quadratic Coupling to Acoustic Phonons

E. A. Muljarov, R. Zimmermann

A microscopic theory of optical transitions in quantum dots with carrier-phonon interaction is developed. Virtual transitions into higher confined states with acoustic phonon assis…

nucl-ex2003★ 106 cited

Demonstration of a solid deuterium source of ultra-cold neutrons

A. Saunders, J. M. Anaya, T. J. Bowles +26

Ultra-cold neutrons (UCN), neutrons with energies low enough to be confined by the Fermi potential in material bottles, are playing an increasing role in measurements of fundamenta…

cond-mat.mes-hall2003★ 184 cited

Low-frequency noise as a source of dephasing of a qubit

Y. M. Galperin, B. L. Altshuler, D. V. Shantsev

With the growing efforts in isolating solid-state qubits from external decoherence sources, the material-inherent sources of noise start to play crucial role. One representative ex…

quant-ph2003★ 29 cited

Dynamical tunneling of bound systems through a potential barrier: complex way to the top

F. Bezrukov, D. Levkov

A semiclassical method of complex trajectories for the calculation of the tunneling exponent in systems with many degrees of freedom is further developed. It is supplemented with a…

cond-mat.supr-con2003★ 3 cited

Interplay between the magnetic fluctuations and superconductivity in the lanthanum cuprates

G. B. Teitel'baum, V. E. Kataev, E. L. Vavilova +3

We report the analysis of the magnetic fluctuations in the superconducing La_{2-x}Sr_xCuO_4 and the related lanthanum cuprates having the different symmetry of the low temperature…

cond-mat.mes-hall2003★ 84 cited

New type of $B$ -periodic magneto-oscillations in a two-dimensional electron system induced by microwave irradiation

I. V. Kukushkin, M. Yu. Akimov, J. H. Smet +4

We observe a new type of magneto-oscillations in the photovoltage and the longitudinal resistance of a two-dimensional electron system. The oscillations are induced by microwave ir…

cond-mat.str-el2003★ 9 cited

Interplay between the orbital quantization and Pauli effect in a charge-density-wave organic conductor

M. Kartsovnik, D. Andres, P. Grigoriev +2

The interlayer magnetoresistance of the low-dimensional organic metal α-(BEDT-TTF)2KHg(SCN)4 under pressure shows features which are likely associated with theoretically predicted…

hep-ph2003★ 146 cited

Narrowing the window for millicharged particles by CMB anisotropy

S. L. Dubovsky, D. S. Gorbunov, G. I. Rubtsov

We calculate the cosmic microwave background (CMB) anisotropy spectrum in models with millicharged particles of electric charge q\sim 10^{-6}-10^{-1} in units of electron charge. W…

astro-ph2003★ 34 cited

Merging Galaxies in the SDSS EDR

S. S. Allam, D. L. Tucker, J. A. Smith +5

We present a new catalog of merging galaxies obtained through an automated systematic search routine. The 1479 new pairs of merging galaxies were found in approximately 462 sq deg…

astro-ph2003★ 271 cited

Short-period AM CVn systems as optical, X-ray and gravitational wave sources

G. Nelemans, L. R. Yungelson, S. F. Portegies Zwart

We model the population of AM CVn systems in the Galaxy and discuss the detectability of these systems with optical, X-ray and gravitational wave detectors. We concentrate on the s…

astro-ph2003★ 13 cited

Early ( $<$ 0.3 day) R-band light curve of the optical afterglow of GRB030329

Y. Urata, T. Miyata, S. Nishiura +13

We observed the optical afterglow of the bright gamma-ray burst GRB030329 on the nights of 2003 March 29, using the Kiso observatory (the University of Tokyo) 1.05 m Schmidt telesc…

hep-ex2003★ 1 cited

New search for T-violation in the decays of the charged kaon

V. Anisimovsky, A. Ivashkin, Yu. Kudenko

We report the results of the measurement of T-violating transverse muon polarization in the decays K^+ --> pi^0 mu^+ nu and K^+ --> mu^+ nu gamma performed in the experiment E246 a…

cond-mat.mes-hall2003★ 52 cited

Weak antilocalization in quantum wells in tilted magnetic fields

G. M. Minkov, A. V. Germanenko, O. E. Rut +4

Weak antilocalization is studied in an InGaAs quantum well. Anomalous magnetoresistance is measured and described theoretically in fields perpendicular, tilted and parallel to the…

hep-ph2003★ 45 cited

Muonic hydrogen ground state hyperfine splitting

R. N. Faustov, A. P. Martynenko

Corrections of orders alpha^5, alpha^6 are calculated in the hyperfine splitting of the muonic hydrogen ground state. The nuclear structure effects are taken into account in the on…

hep-ph2003★ 88 cited

$M (η_{b})$ and $α_{s}$ from Nonrelativistic Renormalization Group

B. A. Kniehl, A. A. Penin, A. Pineda +2

We sum up the next-to-leading logarithmic corrections to the heavy-quarkonium hyperfine splitting using the nonrelativistic renormalization group. On the basis of this result, we p…

cond-mat.str-el2003★ 225 cited

Mutual Experimental and Theoretical Validation of Bulk Photoemission Spectra of Sr1-xCaxVO3

A. Sekiyama, H. Fujiwara, S. Imada +14

We report high-resolution high-energy photoemission spectra together with parameter-free LDA+DMFT (local density approximation + dynamical mean-field theory) results for Sr1-xCaxVO…

cond-mat.str-el2003★ 13 cited

Pseudogap behavior of nuclear spin relaxation in high Tc superconductors in terms of phase separation

L. P. Gor'kov, G. B. Teitel'baum

We analyze anew experiments on the NMR in cuprates and find an important information on their phase separation and its stripe character hidden in the dependence of $1 /^{63} T_{1}$ o…

cond-mat.other2003★ 146 cited

Nonlinear dynamics of polariton scattering in semiconductor microcavity: bistability vs stimulated scattering

N. A. Gippius, S. G. Tikhodeev, V. D. Kulakovskii +2

We demonstrate experimentally an unusual behavior of the parametric polariton scattering in semiconductor microcavity under a strong cw resonant excitation. The maximum of the scat…

astro-ph2003★ 46 cited

Large-scale magnetic field generation by alpha-effect driven by collective neutrino-plasma interaction

V. B. Semikoz, D. D. Sokoloff

We suggest a new mechanism for generation of large-scale magnetic field in the hot plasma of early universe which is based on the parity violation in weak interactions and depends…